How do you stretch liner over edge?

To stretch a liner over an edge, first ensure that the liner is clean and free of debris. Begin by positioning one end of the liner over the edge, then gradually pull the liner taut while working your way along the edge to avoid wrinkles. Use a heat gun or sunlight to gently warm the liner if it's stiff, making it more pliable. Secure the liner in place with appropriate fasteners or adhesive once it is properly stretched and aligned.